Bicycle



FIG. 1 is a perspective view of the bicycle showing my new design;

FIG. 2 is a front view of the bicycle showing my new design;

FIG. 3 is a rear view of the bicycle showing my new design;

FIG. 4 is a side view of the bicycle showing my new design; and,

FIG. 5 is a top view of the bicycle showing my new design.

The ornamental design for a bicycle, as shown and described.